View Compilation Error

0_0_39101959_28019.cpp: In function 'int solve()':
0_0_39101959_28019.cpp:59:5: error: 'memset' was not declared in this scope
   59 |     memset(ass,0,sizeof(ass));
      |     ^~~~~~
0_0_39101959_28019.cpp:6:1: note: 'memset' is defined in header '<cstring>'; did you forget to '#include <cstring>'?
    5 | #include <algorithm>
  +++ |+#include <cstring>
    6 | 
0_0_39101959_28019.cpp: At global scope:
0_0_39101959_28019.cpp:141:1: error: '::main' must return 'int'
  141 | void main() {
      | ^~~~